Shoulder arthroplasty. Part 2: normal and abnormal radiographic findings

Area of Science:

• Orthopedic Surgery
• Radiology
• Biomedical Engineering

Background:

• Radiological reports frequently guide referrals for specialist musculoskeletal care.
• Post-shoulder arthroplasty, identifying asymptomatic signs of prosthesis failure is vital for timely intervention.
• Unaddressed prosthesis failure can lead to unsalvageable situations, necessitating complex revision surgery.

Purpose of the Study:

• To detail the modes of failure for shoulder arthroplasty.
• To describe the radiographic features associated with shoulder arthroplasty failure.
• To aid radiology trainees and non-musculoskeletal specialist radiologists in identifying potential implant issues.

Main Methods:

• Review of radiographic findings in shoulder arthroplasty.
• Analysis of common failure modes and their imaging characteristics.
• Focus on identifying subtle, asymptomatic signs of implant compromise.

Main Results:

• Specific radiographic patterns indicative of various shoulder arthroplasty failure modes are presented.
• Key imaging features distinguishing between normal post-operative changes and pathological failure are highlighted.
• The importance of vigilant radiological assessment for early detection of asymptomatic failure is emphasized.

Conclusions:

• Radiographic assessment plays a critical role in the post-operative management of shoulder arthroplasty.
• Understanding failure modes and radiographic signs enables early detection and planning of revision surgery.
• This knowledge is essential for radiologists to effectively manage patients with shoulder prostheses.